Aninda Sadhukhan visited his shredder to dispose of his United MileagePlus Explorer card with Chase Bank on Monday night after he canceled the account. It's a potential travel sacrifice for the IT auditor, who lives in Indianapolis and and flies United frequently.

His "general disatisfaction" with flying United in the past few years, some issues with the credit card rewards program and videos of other bad experiences on United all contributed to his decision, he said. But the images of what happened to the passenger being removed from the plane were too much for him.

"The bloody pictures were crossing a red line for me," the 35-year-old told CNN.

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"Getting rid of the card is the first step in making myself feel accountable in not being able to fly United."

Others with the same credit card took similar measures to show their anger with the airline.

"Cutting up my United credit card in protest of their recent brutal treatment of a legal paying passenger. Please do the same," wrote Phyllis Brown on Facebook.

"Just for the sake of a crew member to be able to get on board, a paying customer gets booted off. So, I cut up my credit card," she said. "My kids live in Africa now, but I'll find other airlines to get around."

"This is certainly something that happened on United, but this is a systemic issue," Sadhukhan said. "I think the entire consumer protection of overbooking a flight should be looked into. It feels like there's little recourse for the consumer. "